轻钢轻混凝土预制墙体抗剪性能研究  

Study on shear resistance of lightweight steel and lightweight concrete precast wall

作　　者：李东彬 闫紫娟 李伟龙 LI Dongbin;YAN Zijuan;LI Weilong(China Building Technique Group Co.,Ltd,Beijing 100013,China)

机构地区：[1]中国建筑技术集团有限公司,北京100013

出　　处：《建筑结构》2024年第16期119-125,共7页Building Structure

基　　金：住房和城乡建设部科学技术项目计划“装配式轻钢轻混凝土结构体系研究”(2016⁃K5⁃001)。

摘　　要：为适应装配式低层住宅结构的发展要求,研发了装配式轻钢轻混凝土结构,该结构主要由轻钢轻混凝土预制墙体提供受剪能力。通过3片轻钢轻混凝土预制墙体的拟静力试验,研究了单侧模板及拼合墙体对轻钢轻混凝土预制墙体抗剪承载力、刚度和耗能能力的影响,结果表明:有单侧模板的预制墙体与无单侧模板的预制墙体抗剪承载力差异不大,初始刚度及刚度退化趋势基本相同。拼合预制墙体的抗剪承载力基本等同于单侧预制墙体,初始刚度及刚度退化趋势也基本相同。基于轻钢轻混凝土预制墙体试件的破坏特征提出了装配式轻钢轻混凝土预制墙体的区格等效斜压杆模型,建立了轻钢轻混凝土预制墙体的抗剪承载力计算公式。In order to meet the development requirements of prefabricated low⁃rise residential structures,a prefabricated lightweight steel and lightweight concrete structure was developed,which is mainly provided with shear capacity by lightweight steel and lightweight concrete precast wall.The effects of unilateral formwork and assembled wall on the shear bearing capacity,stiffness and energy dissipation capacity of lightweight steel and lightweight concrete precast wall were studied by quasi⁃static test of three lightweight steel and lightweight concrete precast walls.The results show that the bearing shear capacity of precast wall with unilateral formwork is not much different from that of precast wall without unilateral formwork,and the initial stiffness and stiffness degradation trend are basically the same.The shear bearing capacity of the prefabricated wall is basically the same as that of the unilateral prefabricated wall,and the initial stiffness and stiffness degradation trend are basically the same.Based on the failure characteristics of lightweight steel and lightweight concrete precast wall specimens,a grid equivalent diagonal strut model of prefabricated lightweight steel and lightweight concrete precast wall was proposed,and a formula for calculating the shear bearing capacity of lightweight steel and lightweight concrete prefabricated wall was established.

关 键 词：装配式轻钢轻混凝土结构 装配式低层住宅结构 预制墙体 抗剪承载力 等效斜压杆模型 

分 类 号：TU377[建筑科学—结构工程]